10-Day Weather Forecast - Port Costa, CA

Partly cloudy in the morning then becoming mostly cloudy. Highs in the mid 90s. West winds 5 to 10 mph.

Mostly cloudy. Lows in the mid 60s. Southwest winds 5 to 10 mph.

Mostly cloudy in the morning then becoming partly cloudy. A slight chance of rain in the morning. Highs in the mid 80s. Southwest winds 5 to 15 mph. Chance of rain 20 percent.

Mostly clear. Lows in the upper 50s.

Sunny. Highs in the lower to mid 80s.

Clear. Lows in the mid 50s.

Mostly clear. Highs in the lower 80s.

Mostly clear. Lows in the mid 50s.

Mostly clear. Highs in the mid 70s.

Mostly clear. Lows in the mid 50s.

Partly cloudy in the morning then becoming sunny. Highs in the lower 80s.

Partly cloudy. Low temperature around 54F. Dew point will be around 52F with an average humidity of 84%. Winds will be 9 mph from the SW.

Sunny. High temperature around 78F. Dew point will be around 53F with an average humidity of 60%. Winds will be 7 mph from the SW.

Clear. Low temperature around 55F. Dew point will be around 52F with an average humidity of 71%. Winds will be 8 mph from the SW.

Mostly sunny. High temperature around 79F. Dew point will be around 53F with an average humidity of 53%. Winds will be 6 mph from the SW.

Mostly clear. Low temperature around 57F. Dew point will be around 52F with an average humidity of 67%. Winds will be 9 mph from the SW.

Sunny. High temperature around 80F. Dew point will be around 53F with an average humidity of 50%. Winds will be 7 mph from the W.

Clear. Low temperature around 57F. Dew point will be around 52F with an average humidity of 66%. Winds will be 9 mph from the SW.